28S and 18S rDNA sequences support the monophyly of lampreys and hagfishes
نویسندگان
چکیده
منابع مشابه
28S and 18S rDNA sequences support the monophyly of lampreys and hagfishes.
Resolving the interrelationships of three major extant lineages of vertebrates (hagfishes, lampreys, and gnathostomes) is a particularly important issue in evolution, because the basal resolution critically influences our understanding of primitive vertebrate characters. A consensus has emerged over the last 20 years that lampreys are the sister group to the gnathostomes and the hagfishes repre...
متن کاملInternal phylogeny of the Chilopoda (Myriapoda, Arthropoda) using complete 18S rDNA and partial 28S rDNA sequences.
The internal phylogeny of the 'myriapod' class Chilopoda is evaluated for 12 species belonging to the five extant centipede orders, using 18S rDNA complete gene sequence and 28S rDNA partial gene sequence data. Equally and differentially weighted parsimony, neighbour-joining and maximum-likelihood were used for phylogenetic reconstruction, and bootstrapping and branch support analyses were perf...
متن کاملRadiolaria Divided into Polycystina and Spasmaria in Combined 18S and 28S rDNA Phylogeny
Radiolarians are marine planktonic protists that belong to the eukaryote supergroup Rhizaria together with Foraminifera and Cercozoa. Radiolaria has traditionally been divided into four main groups based on morphological characters; i.e. Polycystina, Acantharia, Nassellaria and Phaeodaria. But recent 18S rDNA phylogenies have shown that Phaeodaria belongs within Cerocozoa, and that the previous...
متن کاملA re-evaluation of Lulworthiales: relationships based on 18S and 28S rDNA.
The Lulworthiales consists of four genera: three that were removed from the Halosphaeriales, namely Lulworthia, Lindra, and Kohlmeyeriella; and Spathulospora, reassigned from the Spathulosporales. However, studies have shown that neither Lulworthia nor Lindra are monophyletic genera. This study was therefore undertaken to re-evaluate the genera of the Lulworthiales based on the SSU and LSU rDNA...
متن کاملDinophilidae (Annelida) is most likely not a progenetic Eunicida: evidence from 18S and 28S rDNA.
Dinophilidae (e.g., Dinophilus O. Schmidt, 1848) is a typical meiofaunal polychaete taxon with a seemingly simple organisation, e.g., no parapodia, only a few segments (Rouse and Pleijel, 2001). Dinophilidae is thought to be an eunicidan taxon and is often presented as the classical example of progenetic evolution within annelids (Westheide, 1987). The retention of ancestral juvenile characters...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Molecular Biology and Evolution
سال: 1998
ISSN: 0737-4038,1537-1719
DOI: 10.1093/oxfordjournals.molbev.a025897